Evaluation of Cerebral Blood Flow Autoregulation in the Rat Using Laser Doppler Flowmetry

10.3791/60540 ◽  
2020 ◽  
Author(s):  
Linda A. Allen ◽  
Maia Terashvili ◽  
Alison Gifford ◽  
Julian H. Lombard
Keyword(s):  
Blood Flow ◽  
Cerebral Blood Flow ◽  
Laser Doppler Flowmetry ◽  
Laser Doppler ◽  
Doppler Flowmetry ◽  
Cerebral Blood Flow Autoregulation

scholarly journals Laser Doppler flowmetry is valid for measurement of cerebral blood flow autoregulation lower limit in rats

2005 ◽  
Vol 90 (3) ◽  
pp. 349-355 ◽  
Author(s):  
Jan Tonnesen ◽  
Anders Pryds ◽  
Erik H. Larsen ◽  
Olaf B. Paulson ◽  
John Hauerberg ◽  
...  
Keyword(s):  
Blood Flow ◽  
Cerebral Blood Flow ◽  
Lower Limit ◽  
Laser Doppler Flowmetry ◽  
Laser Doppler ◽  
Doppler Flowmetry ◽  
Cerebral Blood Flow Autoregulation

scholarly journals Correlation of rheoencephalography and laser Doppler flow: a rat study

2019 ◽  
Vol 7 (1) ◽  
pp. 55-58 ◽  
Author(s):  
Michael Bodo ◽  
Ryan Sheppard ◽  
Aaron Hall ◽  
Martin Baruch ◽  
Melissa Laird ◽  
...  
Keyword(s):  
Blood Flow ◽  
Cerebral Blood Flow ◽  
Laser Doppler Flowmetry ◽  
Characteristic Curve ◽  
Laser Doppler ◽  
Doppler Flowmetry ◽  
Laser Doppler Flow ◽  
Doppler Flow ◽  
Cerebral Blood Flow Autoregulation ◽  
Rat Study

Abstract Measuring brain electrical impedance (rheoencephalography) is a potential technique for noninvasive, continuous neuro-monitoring of cerebral blood flow autoregulation in humans. In the present rat study, we compared changes in cerebral blood flow autoregulation during CO2 inhalation measured by rheoencephalography to changes measured by laser Doppler flowmetry, an invasive continuous monitoring modality. Our hypothesis was that both modalities would reflect cerebral blood flow autoregulation. Male Sprague-Dawley rats (n=28; 28 control and 82 CO2 challenges) were measured under anesthesia. The surgical preparation involved implantation of intracerebral REG electrodes and an LDF probe into the brain. Analog waveforms were stored in a computer. CO2 inhalation caused transient, simultaneous increases in the signals of both laser Doppler flow (171.99 ± 46.68 %) and rheoencephalography (329.88 ± 175.50%). These results showed a correlation between the two measured modalities; the area under the receiver operating characteristic curve was 0.8394. The similar results obtained by measurements made with laser Doppler flowmetry and rheoencephalography indicate that rheo-encephalography, like laser Doppler flowmetry, reflects cerebral blood flow autoregulation. Rheoencephalography therefore shows potential for use as a continuous neuro-monitoring technique.

Reproducibility of measuring cerebral blood flow by laser-Doppler flowmetry in mice

10.2741/e691 ◽  
2014 ◽  
Vol E6 (1) ◽  
pp. 62-68
Author(s):  
Hiroshi Ito
Keyword(s):  
Blood Flow ◽  
Cerebral Blood Flow ◽  
Laser Doppler Flowmetry ◽  
Laser Doppler ◽  
Doppler Flowmetry

The Characteristics of Laser-Doppler Flowmetry for the Measurement of Regional Cerebral Blood Flow

Neurosurgery ◽  
1995 ◽  
Vol 36 (2) ◽  
pp. 358???364 ◽  
Author(s):  
Osamu Fukuda ◽  
Shunro Endo ◽  
Naoya Kuwayama ◽  
Jun Harada ◽  
Akira Takaku
Keyword(s):  
Blood Flow ◽  
Cerebral Blood Flow ◽  
Laser Doppler Flowmetry ◽  
Regional Cerebral Blood Flow ◽  
Laser Doppler ◽  
Regional Cerebral Blood ◽  
Doppler Flowmetry

Comparison of temporal response to cerebral blood flow measured by laser speckle flowgraphy and laser Doppler flowmetry

2011 ◽  
Author(s):  
Masashi Kusano ◽  
Haruka Nakayama ◽  
Hiroyuki Takuwa ◽  
Kazuto Masamoto ◽  
Iwao Kanno ◽  
...  
Keyword(s):  
Blood Flow ◽  
Cerebral Blood Flow ◽  
Laser Doppler Flowmetry ◽  
Laser Speckle ◽  
Laser Doppler ◽  
Laser Speckle Flowgraphy ◽  
Temporal Response ◽  
Doppler Flowmetry

Effect of nimodipine on the autoregulation of cerebral blood flow studied by laser-Doppler flowmetry

1993 ◽  
Vol 625 (2) ◽  
pp. 301-306 ◽  
Author(s):  
Geneviève Florence ◽  
Gilles Bonvento ◽  
Pascal Roucher ◽  
Robert Charbonne ◽  
Jacques Seylaz
Keyword(s):  
Blood Flow ◽  
Cerebral Blood Flow ◽  
Laser Doppler Flowmetry ◽  
Laser Doppler ◽  
Doppler Flowmetry
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